Question

Consider three identical metal spheres, A, B, and C. Sphere A carries a charge of 9q. Sphere B carries a charge of -q. Sphere C carries no net charge. Spheres A and B are touched together and then separated. Sphere C is then touched to sphere A and separated from it. Lastly, sphere C is touched to sphere B and separated from it. (a) What is the ratio of the final charge on sphere C to q

Answer 1

✔ A and D

✔ B

✔ C

Explanation: because i said so

Answer 2

Step-by-step explanation:

A and B are touched .

charge on each of them after touching = (9q - q) / 2 = 4q

when C is touched with A

charge on A and C each after touching

= 4q + 0 / 2 = 2q

When C is touched with B

charge on each of them

(2q + 4q ) / 2 = 3 q

Final charge on C = 3q